Gravels and Substrates

CaribSea, Freshwater, Instant Aquarium, Tahitian Moondensity is equal to 1473.7 kg/m³ or 92 lb/ft³ with specific gravity of 1.4737 relative to pure water. Calculate how much of this gravel is required to attain a specific depth in a cylinder, quarter cylinder or in a rectangular shaped aquarium or pond